Comminuting nozzle



Jan. 13, 1959 w, HEGMANN 2,868,587 I COMIIINUTING NOZZLE Filed Feb. 23, 1955 IN VEN TOR.

QrK r/fak/er United States Patent M 2,868,587 COMMINUTING NOZZLE William Hegmann, Fort Smith, Ark. Application February 23, 1955, Serial No. 489,952

2 Claims. (Cl. 299-140) The invention relates to the manufacture of metallic dust or powder or the comminution of matter and is an improvement in the apparatus invented by me and covered by U. S. Patent No. 2,006,891, issued July 2, 1935 Because of the similarity in partial design of the present invention and that mentioned in the above named patent, it will be necessary to describe certain structural parts of said named patent in conjunction with that which is now found new, useful and a great contributing feature in design, which in turn permits a greater amount of product to be produced per. unit, and it aims primarily to permit the admixture of gaseous chemical elements, in a more intimate manner with product being processed, thus causing an impregnation by the reagent and in some instances a physical or chemical change in the resultant product.

2,868,587 t t Jan- 13,. 19.59

to said chamber B. The front wall of jacket 1 ,is so constructed to form a circular opening-surrounding the conical end surface of jacket 2. The innersurface of circular opening in front wall of jacket 1 is lathe turned toform a frusto conical surface, and when assembled, as in Figure 1, in conjunction with jacket 2, the two conical surfaces of said parts form an angular annular passage for the air or gas discharging from chamber B. This vconstruction effectsa conical streamof air or gas 10 traveling toward its own .vertex and strikes or contacts the. outside circumference of the molten metal or liquid tubular stream issuing from metal chamber A through annular passage 11, instantaneously at the point of discharge of both thereof.

Part 4, Figure 1, is a hollow receptacle, closed at one end and lathe turned to fit snugly within the inner circum-ference or bore of tubular sleeve 3. One end is flanged to permit assembly toparts Zand 3 and to outer end of said flange a hollow cylindrical cap is attached thereto to form chamber C. Pipe 8 is inserted in chamber a C and communicates with air or gas supply to provide With the foregoing in view the inventive irnprovement resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.

Figure l is a vertical sectional view of one form of construction, noting certain features of the former invention and the new or added structure thereto, which substantiates the inventive improvement.

Figure 2 is a vertical sectional view showing another form of construction of the inner part or subject of improvement but does not have the means of providing a third conducting tube for the admission of other gaseous elements previously mentioned.

Figure 1 comprises a hollow tubular sleeve 3 with flanged end and opposite end stepped or otherwise beveled so as to effect an annular frustum shaped surface and connecting thereto or cooperating with part 3 is a jacket 2 surrounding sleeve 3 in such a manner as to provide an annular chamber A, whose walls are the outer surface of sleeve 3 and inner surface of jacket 2. Jacket 2 is provided with two flanges to permit assembly to part 3 and part 1. Opposite these flanges or the other end of jacket 2 is constructed so as to form a conical surface. The inner end surface of jacket 2 is lathe turned to form a horizontal circular surface'and comprises in conjunction with the outer surface of tubular sleeve 3, an annular horizontal passage or conducting means from annular chamber A, formed by the assembly of parts 2 and 3 and indicated as annular area A, Figure 1. Area A being the chamber into which the molten metal or liquid is transferred from storage source shall be known hereinafter as metal chamber. Pipe 7 is inserted in jacket 2 or metal chamber and communicates with storage source to provide passage of molten metal or liquid from said storage to metal chamber.

Part 1, Figure l, is a jacket so constructed as to permit attachment to center flange of jacket 2, by means of cap screws, and 'to form an annular opening or air chamber surrounding outer surface of jacket 2 and is indicated as area B. Pipe 6 is inserted in jacket 1 or air chamber and communicates with air or gas supply to provide passage of the air or gas from source of supply passage of air or gas from source of supply to chamber C. The closed end of part 4-is stepped to reduce the diameter and drilled horizontally through the shoulder or stepped surface are holes 14 which permit passage of air or gas from chamber .C to chamber D. Chamber D is formed by reducing. the diameter beyond] the stepped surface of part 4 and drilled laterally through this reduced diameter are holes 13 to permit passage of air or gas, from tube 9, which has matching lateral holes with that of the reduced diameter of part 4, into chamber D.

Tube 9 isinserted through flanged cap 5 and extends longitudinally and coaxially through and beyond the reduced diameter of part 4. The end of tube 9 which protrudes through the reduced diameter of part 4 is threaded to permit connecting the conicalshaped end plug 4A of chamber D. The threaded hole in part 4A extends through to outer side where diameter is increased and tappedfor pipe threads which in turn is closed with a pipe plug. a

The conical surface of part.4A is positioned with reference to the frusto conical surface of tubular sleeve 3 to form an inverted angular annular passage 12 for the air or gas discharging from chamber D. This construction effects an inverted conical stream of air or gas, traveling away from its own vertex, and strikes or contacts the tubular stream of metal or liquid exuding from annular opening 11 from within, and instantaneously at the point of discharge of both thereof.

Figure 2 shows a different construction of part 4, Figure I, noted as 4' and is assembled with tubular sleeve 3. This construction comprises a hollow receptacle closed at one end and lathe turned to fit snugly within the bore or internal diameter of tubular sleeve 3, flanged at one end to permit connection to flange of sleeve 3 and stepped at closed end to decrease diameter and further stepped beyond this point to permit threading a still smaller diameter to which conical shaped end plug 4B is attached. Through the stepped diameter or end wall of chamber D are holes 14' drilled longitudinally to permit passage of air or gas from chamber C to chamber D.

The conical surface of part 4B is positioned with reference to the frusto conical surface of tubular sleeve 3 to form an inverted angular annular passage 12 for the air or gas discharging from chamber D. This. construction effects a similar shaped air or gas stream as described in latter part of paragraph 11.

The opening in flanged end of 4' is tapped with pipe threads to permit insertion of pipe bushing and subsequent connection to air or gas supply, to provide passage of air or gas, from source of supply to chamber C.

The conical shaped end plug 4B is constructed similar to 4A except that threaded hole does not extend through from end to end. I

A. brief description of the operation is .as follows: Molten "metal" or; liquid 1 is fed from storage source through pipe '7 .into chamber A and is discharged as a tubular liquid stream through annular orifice 11. At the same time a hollow ,conicalstr'eam of air or gas un er pressure discharging from orifice 10 and traveling toward its ownvertex, strikes or contacts'the tubular liquid stream at the outer, circumferencc of same and simultaneously warms discharge of the tubular liquid streaniand "the aforementioned hollow conical stream bf'air or gas an inverted conical stream of air or gas under pressure traveling away fromits own vertex and discharging fromorific'e 12 strikes or contacts the inner circumference of the tubular liquid stream. The discharge openings of the two air streams and the discharge opening of "the-'tubularliquid stream have their discharge ends' disposd at a -single transverse plane'to effect contact of the two air streams and tubular liquid stream instantaneously with the discharge of all three thereof. 7 As' stated before partial description of a prior patent is contained in the foregoing and only the claims of the new improvementfollow, understanding that the omission of descriptive structural and operational features of the prior art from the new' claims are necessary to comply with patent law.

:I claim: l. A comminuting nozzle comprising a central part havingan'inwardly conical outer surface, a second part surrounding said central part and having an inwardly conical end surface spaced from said central part outer surface to form an annular orifice, said second part and central part surfaces being equidistant one from the other throughout their length, said second part having an outer cylindrical surface, a third part surrounding said second part and having a cylindrical inner surface spaced from said second part cylindrical surfaces to form a second annular orifice, said cylindrical surfaces being equidistant one from the other throughout their length, saidthird part 'having conical outer surface, a fourth part surrounding said third part and having an outwardly conical inner surface spaced from said third part outer surface to form a third annular orifice, said third and 4, fourth parts being equidistant one from the other throughout their length, said orifices being concentric about a single axis, all of said surfaces terminating in a single plane transversely of said axis, said orifices being positioned immediately adjacent each other, said first and third orifices being disposed at equal converging angles to said second annular orifice whereby fluids emanating from said three orifices are caused to intersect simultaneously in a single plane immediately adjacent the outlet of said second annular orifice.

2. Nozzle means comprising a central part having an inwardly conical outer, surface, a second part having an inwardly conical surface spaced from and surrounding said central part conical surface to form an inner, outwardly flared nozzle passage, means for delivering air under pressure to said inner nozzle passage, said second part having a cylindrical outer surface, a third part having a cylindrical surface spaced from and surrounding "said second part cylindrical surface to form an intermediate, tubular nozzle passage, means for delivering molten metal under pressure to said intermediate nozzle passage, said third part having an outwardly conical outer surface, a fourth part having an outwardly conical surface spaced from and surrounding said third part conical surfaceto form an outwardly converging outer nozzle passage, means for delivering air under pressure to said outer nozzle passage, said nozzle passages being concentric about a single axis and terminating in concentric annular outlets, said outlets lying in a single plane transversely of said axis, said inner and outer passages being disposed at equal converging angles to said intermediate tubular passage and terminating immediately adjacent the outlet of said intermediate passage to cause immediate, simultaneous intersection of air and molten metalstreams emanating from said nozzle passages in an annular area immediately adjacent and of equal radius with said intermediate nozzle annular outlet. 1

References Cited in the file of this patent UNITED STATES PATENTS 

